Civic Intelligence

Mainframe Studios

EIN 46-1637111 • 501(c)3 • Des Moines, IA

Profile

Mainframe provides 181 affordable workspaces to over 220 creatives and advances equity & opportunities in the arts. Mainframe hosts monthly open studio events for the public, provides weekly professional development sessions to artists, gives tours for youth and community groups, and rents venue space for community and private events.

900 Keosauqua WayDes Moines, IA 50309

www.mainframestudios.org

Siviq Scores

Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.

Liabilities / Assets

22nd percentile

0.02x

Higher debt load relative to assets than 22% of similar nonprofits.

501(c)3 • $10M-$25M nonprofits • Source year 2023

Liabilities / Revenue

42nd percentile

0.16x

Higher debt load relative to revenue than 42% of similar nonprofits.

501(c)3 • $10M-$25M nonprofits • Source year 2023

Net Margin

9th percentile

-32%

Higher net margin than 9% of similar nonprofits.

501(c)3 • $10M-$25M nonprofits • Source year 2023

Top Officer Pay

Score unavailable

No value available

No filing with officer rows is available for this organization yet.

Asset Growth

14th percentile

-6.6%

Faster asset growth than 14% of similar nonprofits.

501(c)3 • $10M-$25M nonprofits • Annualized from 2022 to 2023

Revenue Growth

4th percentile

-53%

Faster revenue growth than 4% of similar nonprofits.

501(c)3 • $10M-$25M nonprofits • Annualized from 2022 to 2023

Balance Sheet
Liabilities / Assets22nd percentile

Assets

Down

$9,808,236

Down $317,000 (-3.1%) from 2023

Liabilities

Up

$254,900

Up $3,069 (+1.2%) from 2023

Net Assets

Down

$9,553,336

Down $320,069 (-3.2%) from 2023

Operations
Liabilities / Revenue42nd percentileNet Margin9th percentile

Revenue

Up

$1,662,532

Up $134,538 (+8.8%) from 2023

Expenses

Down

$1,982,601

Down $27,304 (-1.4%) from 2023

Net Income

Up

-$320,069

Up $161,842 (+34%) from 2023

Trend Graphs

Balance Sheet Trend

Asset Growth14th percentile

Grouped bars show assets, liabilities, and net assets across loaded filings.

$15M$10M$5.0M$0Assets 2014: $2,365,495Liabilities 2014: $1,600,725Net Assets 2014: $764,7702014Assets 2015: $2,910,290Liabilities 2015: $1,726,314Net Assets 2015: $1,183,9762015Assets 2016: $2,785,656Liabilities 2016: $286,384Net Assets 2016: $2,499,2722016Assets 2017: $5,867,521Liabilities 2017: $2,251,217Net Assets 2017: $3,616,3042017Assets 2018: $6,447,422Liabilities 2018: $1,925,910Net Assets 2018: $4,521,5122018Assets 2019: $7,635,993Liabilities 2019: $1,564,580Net Assets 2019: $6,071,4132019Assets 2020: $9,188,448Liabilities 2020: $395,318Net Assets 2020: $8,793,1302020Assets 2021: $8,963,700Liabilities 2021: $303,675Net Assets 2021: $8,660,0252021Assets 2022: $10,836,605Liabilities 2022: $481,289Net Assets 2022: $10,355,3162022Assets 2023: $10,125,236Liabilities 2023: $251,831Net Assets 2023: $9,873,4052023Assets 2024: $9,808,236Liabilities 2024: $254,900Net Assets 2024: $9,553,3362024

Highlighted filing

2024

Assets$9,808,236
Liabilities$254,900
Net Assets$9,553,336
Open 2024 Filing

Operations Trend

Revenue Growth4th percentile

Revenue, expenses, and net income by year, with the latest filing highlighted.

$4.0M$2.0M$0-$2.0MRevenue 2014: $768,580Expenses 2014: $11,138Net Income 2014: $757,4422014Revenue 2015: $682,788Expenses 2015: $263,582Net Income 2015: $419,2062015Revenue 2016: $876,836Expenses 2016: $311,483Net Income 2016: $565,3532016Revenue 2017: $1,795,947Expenses 2017: $678,915Net Income 2017: $1,117,0322017Revenue 2018: $1,822,013Expenses 2018: $916,805Net Income 2018: $905,2082018Revenue 2019: $2,565,838Expenses 2019: $1,015,938Net Income 2019: $1,549,9002019Revenue 2020: $3,646,448Expenses 2020: $924,730Net Income 2020: $2,721,7182020Revenue 2021: $1,124,336Expenses 2021: $1,257,441Net Income 2021: -$133,1052021Revenue 2022: $3,251,639Expenses 2022: $1,559,009Net Income 2022: $1,692,6302022Revenue 2023: $1,527,994Expenses 2023: $2,009,905Net Income 2023: -$481,9112023Revenue 2024: $1,662,532Expenses 2024: $1,982,601Net Income 2024: -$320,0692024

Highlighted filing

2024

Revenue$1,662,532
Expenses$1,982,601
Net Income-$320,069
Open 2024 Filing

Filings

Most recent year

2024 • Form 990Detailed filing. Detailed filing data is available for this year.

Open filing
Assets
$9,808,236
Liabilities
$254,900
Net assets
$9,553,336
Revenue
$1,662,532
Expenses
$1,982,601
Net income
-$320,069
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2024Detailed filing. Detailed filing data is available for this year.$9.81$0.25$9.55$1.66$1.98$0.32
2023Detailed filing. Detailed filing data is available for this year.$10.1$0.25$9.87$1.53$2.01$0.48
2022Detailed filing. Detailed filing data is available for this year.$10.8$0.48$10.4$3.25$1.56$1.69
2021Detailed filing. Detailed filing data is available for this year.$8.96$0.30$8.66$1.12$1.26$0.13
2020Detailed filing. Detailed filing data is available for this year.$9.19$0.40$8.79$3.65$0.92$2.72
2019Summary only. Only limited summary data is available for this year.$7.64$1.56$6.07$2.57$1.02$1.55
2018Summary only. Only limited summary data is available for this year.$6.45$1.93$4.52$1.82$0.92$0.91
2017Summary only. Only limited summary data is available for this year.$5.87$2.25$3.62$1.80$0.68$1.12
2016Summary only. Only limited summary data is available for this year.$2.79$0.29$2.50$0.88$0.31$0.57
2015Summary only. Only limited summary data is available for this year.$2.91$1.73$1.18$0.68$0.26$0.42
2014Summary only. Only limited summary data is available for this year.$2.37$1.60$0.76$0.77$0.01$0.76
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Jan 1, 2024 to Dec 31, 2024
Signed
May 12, 2025
Return Version
2024v5.1
Gross Receipts
$1,662,847
Mission and Program Overview

Mission

Mainframe provides 181 affordable workspaces to over 220 creatives and advances equity & opportunities in the arts. Mainframe hosts monthly open studio events for the public, provides weekly professional development sessions to artists, gives tours for youth and community groups, and rents venue space for community and private events.

Mainframe Studios is a financially self-sustaining nonprofit providing affordable workspaces to advance equity and opportunities in the arts. It is the largest nonprofit art studio building in the nation.

Balance Sheet Detail
LineBeginningEndChange
Assets
Rtn Earn Endowment Incm Other Fnds$9,873,405$9,553,336▼ $320,069
Land, Buildings, and Equipment, Net$9,787,588$9,020,791▼ $766,797
Cash and Non-Interest-Bearing Accounts$286,892$767,710▲ $480,818
Pledges and Grants Receivable$46,991$19,735▼ $27,256
Accounts Receivable$3,765$0▼ $3,765
Total Assets$10,125,236$9,808,236▼ $317,000
Liabilities
Mortgage Notes Payable Secured by Investment Property$157,177$153,767▼ $3,410
Other Liabilities$74,223$73,894▼ $329
Deferred Revenue$9,976$15,974▲ $5,998
Accounts Payable and Accrued Expenses$10,455$11,265▲ $810
Total Liabilities$251,831$254,900▲ $3,069
Net Assets / Fund Balance
Total Net Assets Fund Balance$9,873,405$9,553,336▼ $320,069
Total Liabilities and Net Assets / Fund Balance$10,125,236$9,808,236▼ $317,000

Asset Categories

AssetBook ValueDepreciationBasis
Buildings$68,335--
Land$1,379,858--
Equipment$94,187--
Leasehold Improvements$7,478,411$3,913,944-
Compensation and Service Providers
Top Officer PayScore unavailable

Board Members and Trustees

NameTitle
John McGowanPresident
Sarah YoungVice President
David SchmitzDirector
Dr Kelly BaumDirector
Gretchen BohlingDirector
Jeff ChelesvigDirector
Justin MandelbaumDirector
Meredith Hubbell StahlDirector
Julia Franklin-JonesExecutive Director
Jill WellsSecretary
Michael TrettinTreasurer
Revenue and Support

Revenue Composition

Contributions and Grants
$213,364
Program Service Revenue
$1,435,742
Investment Income
$7,972
Other Revenue
$5,454
All Other Contributions
$213,364
Change in Net Assets
$-320,069
Expenses and Functional Allocation

Major Expense Lines

Line ItemAmount
Other Expenses$1,769,099
Salaries, Compensation, and Employee Benefits$213,502
Total Fundraising Expense$10,674
Grants and Similar Amounts Paid$0
Professional Fundraising Fees$0

Functional Expense Allocation

Line ItemProgramManagementFundraisingTotal
Depreciation Depletion$746,099$31,087$0$777,186
Occupancy$702,224$29,597$0$731,821
Other Salaries and Wages$107,933$62,961$8,994$179,888
Fees for Services Other$89,695$0$0$89,695
All Other Expenses$0$40,181$0$40,181
Advertising$26,539$0$0$26,539
Fees for Services Management$0$24,000$0$24,000
Fees for Services Accounting$0$23,320$0$23,320
Information Technology$16,695$4,174$0$20,869
Pension Plan Contributions$11,776$6,869$981$19,626
Office Expenses$10,378$6,434$0$16,812
Payroll Taxes$8,393$4,896$699$13,988
Fees for Services Legal$0$10,410$0$10,410
Conferences and Meetings$2,291$5,975$0$8,266
Total Functional Expenses$1,722,023$249,904$10,674$1,982,601
Fundraising, Events, and Gaming
Fundraising activities
No
Gaming activities
No
Professional fundraiser used
No

Fundraising and Gaming Totals

Line ItemAmount
Professional Fundraising Fees$0
Political and Lobbying Activity
Political campaign activity
No
Lobbying activity
No
Subject to proxy tax
No
Debt and Bond Financing

Other Reported Liabilities

LiabilityAmount
Tenant security deposits$73,894
Governance and Compliance

Governance Checklist

Compiled or reviewed by an accountant
No
Annual disclosure for covered persons
Yes
Backup withholding compliance
Yes
Business relationship with 35% controlled entity
No
Business relationship with family members
No
Business relationship with organization members
No
Material changes to governing documents
No
Compensation from other sources disclosed
No
CEO compensation reviewed
Yes
Other officer compensation reviewed
No
Conflict-of-interest policy
Yes
Audited financial statements prepared
No
Key decisions subject to board approval
No
Management duties delegated
No
Filing and Contact Details

Filer

Filer Name
Mainframe Studios
EIN
46-1637111
Phone
5152164253
Address
900 KEOSAUQUA WAY, DES MOINES, IA 50309

Signing Officer

Name
Michael Trettin
Title
Treasurer
Phone
5152164253
Signed
2025-05-12
Discuss with paid preparer
Yes

Organization Details

Principal Officer
John Mcgowan
Formed
2012
Legal Domicile
Ia
Voting Board Members
9
Independent Board Members
9
Employees
4
Volunteers
13

Preparer

Firm
The Planners Tax & Accounting
Address
2600 WESTOWN PARKWAY SUITE 230, WEST DES MOINES, IA 50266
Preparer
Jed Alexander
Phone
5154127123
Supplemental Narrative

Additional Explanations

Pt VI, Line 11B

“The 990 was prepared by an independent accounting firm. Mainframes board president and treasurer reviewed and provided comments to the preparer. All board members were provided with a copy of the 990 prior to filing and have had the opportunity to review and provide comments.”

Pt VI, Line 12C

“The executive director annually distributes a form and collects the form with signatures on which board members disclose any conflicts. If any questions arise, the officers review the questions with the affected board member.”

Pt VI, Line 15A

“Compensation for the executive director is voted on by the board in consultation with mainframess third party human resources company and is designed to be competitive with comparable nonprofits in the region.”

Pt VI, Line 19

“Documents were made available to the public upon request.”

Raw XML AppendixShowing 400 of 470 raw XML fields

This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.

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IRS990/Desc0In 2024, Mainframe completed its second full year operating at 99% capacity. Creative workspaces are used by over 200 artists and 8 arts related nonprofits. Mainframe maintained a wait list of over 85 applicants. Income from affordable rents generated enough revenue to cover operating costs. An additionl 4650 square foot event rental space provides a place for weddings, conferences, workshops, corporate parties and fundraisers to rent for a rental fee. Our second floor common area serves as a learning space where professional development sessions are regularly offered to help artists and their small businesses thrive. In June 2024, Mainframe took over management of Studio 108 to provide flexible arts and culture education space that is used for K-12 art field trips. The space is rented to dance groups on evenings and weekends to generate additional rental income and address community needs.
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IRS990/Form990PartVIISectionAGrp/PersonNm0John McGowan
IRS990/Form990PartVIISectionAGrp/PersonNm1Sarah Young
IRS990/Form990PartVIISectionAGrp/PersonNm2Michael Trettin
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IRS990/MissionDesc0Mainframe Studios is a financially self-sustaining nonprofit providing affordable workspaces to advance equity and opportunities in the arts. It is the largest nonprofit art studio building in the nation.
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IRS990/PrincipalOfficerNm0JOHN MCGOWAN
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IRS990/ProgSrvcAccomActy2Grp/Desc0Mainframe Studios spends a portion of of its budget on programming for monthly First Friday Open Studio events that attract thousands of visitors. We average 2,400 attendees each month with over 14,000 people attending. That accounts for a sizable community impact and a total of 176,000 visitor experiences each year. The festive, free First Friday Studio events feature a unique and new experience for audiences each month. These include exhibitions in 4 gallery spaces, arts activities, and special guests and performances relating to various art forms such as ceramics, fashion, printmaking and painting. First Fridays also feature local musicians and affordable dinner options by local food vendors and resident caterers, Tangerine Food Company. Artists/tenants open their studios to connect with new customers and community members to help further their careers and artistic practices. Artists/tenants also develop and lead professional development sessions each week to improve business skills and accelerate their careers. Artists/tenants helped redesign the website to promote Mainframe, their studios and classes, and public events. Mainframe also self publishes a bi-annual studio director and gift guide that includes stories about our artists and partners.
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IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt0THE 990 WAS PREPARED BY AN INDEPENDENT ACCOUNTING FIRM. MAINFRAMES BOARD PRESIDENT AND TREASURER REVIEWED AND PROVIDED COMMENTS TO THE PREPARER. ALL BOARD MEMBERS WERE PROVIDED WITH A COPY OF THE 990 PRIOR TO FILING AND HAVE HAD THE OPPORTUNITY TO REVIEW AND PROVIDE COMMENTS.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt1THE EXECUTIVE DIRECTOR ANNUALLY DISTRIBUTES A FORM AND COLLECTS THE FORM WITH SIGNATURES ON WHICH BOARD MEMBERS DISCLOSE ANY CONFLICTS. IF ANY QUESTIONS ARISE, THE OFFICERS REVIEW THE QUESTIONS WITH THE AFFECTED BOARD MEMBER.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt2COMPENSATION FOR THE EXECUTIVE DIRECTOR IS VOTED ON BY THE BOARD IN CONSULTATION WITH MAINFRAMESS THIRD PARTY HUMAN RESOURCES COMPANY AND IS DESIGNED TO BE COMPETITIVE WITH COMPARABLE NONPROFITS IN THE REGION.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt3DOCUMENTS WERE MADE AVAILABLE TO THE PUBLIC UPON REQUEST.
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